The week in pictures: 18 January 2013

A fork that vibrates when you eat too much has been developed. The HAPIfork knows how fast you're eating and helps you slow down through use of gentle vibrations and indicator lights. It works in tandem with a smartphone app which receives data transmitted by the fork. HAPIfork monitors the start and end time of your meal, the amount of "fork servings" taken per minute and per meal, the specific duration of each "fork serving" interval and your overall meal duration. The idea is that you only feel full roughly 20 minutes after a meal, so the faster you eat, the more you eat. The manufacturers claim that the slower you eat, the faster you feel full, supporting your goal of taking in less calories during each meal. You can choose to keep your eating account private or share some or all of this data with friends and family who are supporting your healthy eating regime. The HAPIfork was unveiled at CES, the annual Consumer Electronics Show in Las Vegas.Picture: Hapifork/Rex Features